Соответствующая норма
Practice Relating to Rule 107. Spies
Hungary’s Military Manual (1992) states:
The Occupying Power may impose the death penalty only on inhabitants guilty of espionage, sabotage [and] intentional offences having caused death. However, such offences must have been punishable by death under the law in force in occupied territory before occupation. 
Hungary, A Hadijog, Jegyzet a Katonai, Föiskolák Hallgatói Részére, Magyar Honvédség Szolnoki Repülötiszti Föiskola, 1992, p. 101.